Alloy



UNITED STATES PATENT OFFICE.

FOSTER MILLIKEN, OF LAWBENQE, NEW YORK, ASSIGNOR T0 FOSTER MILLIKEN,

S. FULLERTON WEAVER, AND JAMES M. REPPLIER, TRUSTEES.

To all whom it may concern:

Be it known that I, Fos'rER MILLIKEN, a citizen of the United States, and a resident of Lawrence, in the county of Nassau and State of New York have invented a new and Improved Alloy, of which the following is a full, clear, and exact description.

ing or purifying agent such as manganese titanium, or tungsten, or chromium.

In carrying out the invention, use is made of copper, 50 to per cent; nickel, 26 to 34 perjcent; iron, 4.- to 8 per cent.; zinc, 7 tell percent; and a deoxidizing or purifying agent, .25 to 5 per cent.

The melt in each case consists of one hundred ounces of the four metals and the percenta e of the deoxidizing agent is then adder? extra. A large percentage of the deoxidizing agent after the latter .has done the work of purifying the alloy, passes off in the slag. Although the above-mentioned deoxidizing agents, namely, manganese titanium, or tungsten or chromium, .have given very ggod results, other .deoxidizing agents may used such, for instance,- as molybdenum, aluminum, bismuth, vanadium, cadmium, silicon and boron. It is understood that the addition of the deoxidizing agent has the double function of purifying the copper, nickel, iron and zinc and of adding a valuable ingredient to the alloy. It 13 further expressly understood that a portlon of the deoxidizing agent used for the purifi cation of the copper, nickel, iron and zinc remains as anintegral part of the allo The alloy thus constituted is characterize by increased electrical resistance, increased elastic limit, increased tensile strength, increased density, a close and fine grain, and a high resistance to corrosion.

Adding the deoxidizing agent to the previousl; formed allo of copper, nickel, iron and zinc permits 0 using a comparatively" small amount of such deoxidizing agent for the purpose of purifying the al10y.-

Specimens of the alloy tested for three the said purifying agent being a Patented Aug. 1'7, 1920.

ALLOY.

1,350,166, Specification of Letters Patent. 7 No Drawing. Application filed August 29, 1918. Serial No. 251,940.

months in an acid test show that with the alloy formed under the influence of manganese titanium there was a loss of .0052

grams per square inch of exposed surface, and the alloy u I der the influen'ce of tungsten disclosed a loss of .0134 grams per square inch, and under the influence ,of chromium the loss was .0079 to .0117 per square inch, and hence it is manifest that an alloy of the character specified has high acid resisting properties. It has also been found that the alloy produced under the influence of manganese titanium has increased density and the grain is more close and finer and resistance to corrdsio'n is increased.

It isexpressly understood that the deoxidizing agent removes an oxidized portions that may have forme on any one of the metals forming the. alloy and hence no cavities, fissures, recesses or the like and incident to oxidation are formed in the allo The alloy is thus compacted and its elastic limit and tensile strength are considerably increased relative to any allo formed of the same metals without the in uence of the deoxidizing agent. It is well known that when a metal isdeoxidized andis free of cavities and the like its electrical resistance is increased and this is expressly the case in the resent alloy.

M nganese titanium is the preferred de oxidizing agent of the ones mentioned above and is a commercial product formed of sixty per cent. manganese and forty per cent. titanium.

The use of tungsten and chromium as deoxidizing agents for the metals of the alloy will form the subject matter of separate applications, and hence specific claims for these deoxidizing agents are not made in this ap plication.

Having thus described my. invention, I-

claim as new and desire to secure by Letters iron, zinc and a purifying agent, the copper,

nickel, iron and zincbeing in a purified state and- .in proportion substantially as specified, portion of O.25- to 5 per cent. of the purifying agent 'used'as the medium' for purifying the said copper, nickel, iron and zinc, and remaining as'an integral part of the alloy after purification of the said copper, nickel, iron and zinc, the said alloy being characterized by increased electrical resistance, increased elastic limit, increased tensile strength, increased density, a close and fine grain, and a high resistance to corrosion.

2. An alloy containing copper, nickel, iron and zinc in proportions substantiallyas specified, the alloy being in a purified state, and manganese and titanium.

3. An allo formed of copper 50 to 60 per cent., nicl iel 26 to 34 per cent., iron .4 to

8 per cent., and zinc 7 to 11 per cent., and

manganese and titanium.

t. Analloy composed of the following ingredientsf in approximately the following 15 proportions, copper 50 to-60 per cent., nickel 26 to 34'per cent., iron 4 to 8 per cent., zinc 7 to 11 per cent., the said ingredients being in a purified .state, and'manganese and titanium.

.FOSILER MILLIKEN'. 

